The CA Datacom STAR Version 12.0 manuals can be found via this link in
docops.ca.com :
Go to Bookshelves and PDFs to find documentation for previous releases.Then search for CA Datacom STAR.
Or go directly to
https://docops.ca.com/bookshelves/ca-datacom-star The CA Datacom STAR 12.0 BOOKSHELF is available and includes the following manuals in HTML and PDF formats:
Administration Guide
Communication Manager Guide
Installation Guide
Release Notes
The CA Datacom STAR ITM messages can be found in the CA Datacom STAR Communication Manager Guide.